A sound box and a sound wave directivity adjusting device thereof

Abstract

The application discloses a sound box and a sound wave directivity adjusting device thereof, wherein the sound wave directivity adjusting device comprises a shell connected with a sound outlet of a loudspeaker of the sound box, an inlet hole is arranged on the sound inlet side of the shell, a horn body is arranged in the shell, the horn body comprises a plurality of directivity wave guide tubes, the horn body is movably arranged in the shell, the vertical directivity of sound waves is adjusted by adjusting the position of the horn body in the shell and making the corresponding wave guide tube output sound waves, the position of the different wave guide tubes in the horn body connected with the sound outlet of the loudspeaker is adjusted according to the environment and the sound effect, so that the vertical directivity of sound waves is changed, the sound is not too harsh when the audience is located in the range close to the linear array, and the "blank area" between the sound boxes can be covered by adjusting the vertical directivity of each sound box, the frequency response consistency in the covered range is kept, the sound wave distribution is more uniform, and the sound is softer.

Description

Technical Field

[0001] This invention relates to the field of acoustic waveguide technology, and in particular to a speaker and its acoustic wave directivity adjustment device. Background Technology

[0002] A speaker is a device that converts audio signals into sound. Simply put, it refers to a speaker enclosure or subwoofer enclosure with a built-in power amplifier that amplifies the audio signal before it is reproduced by the speaker itself, making the sound louder and radiating it into space. It is an extremely important component of an audio system, responsible for converting electrical signals into sound signals for direct listening by the human ear.

[0003] In traditional line array speakers, line source technology arranges sound sources in a line to form the propagation characteristics of line sources: making the sound produce specific directionality, controlling the sound energy to effectively radiate to the target range, reducing the sound energy in non-target areas, reducing reflected sound, and strengthening direct sound.

[0004] However, existing line sound source technologies have shortcomings:

[0005] 1. Line source technology is mainly used in line array speakers. Due to its fixed vertical directivity, when the angle between speakers is too large, a sound "blank area" will be left between the speakers, which will destroy the frequency response consistency of the overall line array speaker sound coverage area.

[0006] 2. Due to the fixed vertical directivity of line arrays, the maximum vertical coverage angle of a given number of line arrays is limited. When a larger angle needs to be covered, more line array speakers must be added to achieve complete coverage. In indoor spaces with limited ceiling height, or in outdoor installations with limited hanging height, it is not possible to add more line array speakers. Therefore, with a given number, existing line arrays cannot achieve complete coverage.

[0007] 3. Due to the fixed vertical directionality of the line array, the sound waves form an attenuation pattern at a fixed distance. Although a narrower vertical directionality can project the sound further, the sound will be too harsh when the audience in the front row is close to the line array.

[0008] Therefore, existing technologies still need to be improved and enhanced. Summary of the Invention

[0009] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a speaker and a sound wave directivity adjustment device thereof.

[0010] To solve the above technical problems, the present invention adopts the following technical solution:

[0011] A sound wave directivity adjustment device for a speaker includes a housing connected to the sound outlet of the speaker. The housing has a sound inlet hole on its sound inlet side. A horn body is disposed in the housing. The horn body includes a plurality of directional waveguides. The horn body is movably disposed in the housing. Adjusting the position of the horn body in the housing causes the corresponding waveguides to output sound waves, thereby adjusting the vertical directivity of the sound waves.

[0012] The horn body includes a horn shell, several longitudinally arranged first partitions and several transversely arranged second partitions. The first partitions and second partitions intersect to form several directional waveguides. The horn shell and the first partitions are bent to one side, and the curvature of the horn shell and each first partition is different, forming waveguides with different curvatures.

[0013] The horn body also includes at least one lever and at least one positioning slider. The lever is connected to the horn housing, and the positioning slider is disposed on the horn housing. The housing has at least one groove, and the positioning slider is disposed in the groove.

[0014] In the aforementioned speaker's sound wave directivity adjustment device, the first partition divides the horn housing into at least three sets of directional waveguides.

[0015] In the sound wave directivity adjustment device of the speaker, the lever is further provided with a first magnetic element, and the housing is provided with a second magnetic element that attracts the first magnetic element.

[0016] In the sound wave directivity adjustment device of the speaker, the diameter of the sound inlet is equal to the width of the two sets of waveguides.

[0017] In the aforementioned speaker's sound wave directivity adjustment device, two rotatable waveguide panels are provided at the opening of the housing. The waveguide panels are located at the sound outlet of the horn body, and the angle between the two waveguide panels can be adjusted to adjust the horizontal directivity of the sound wave.

[0018] In the sound wave directivity adjustment device of the speaker, each of the second partitions is arranged with one long and one short interval.

[0019] A speaker includes a speaker body, on which a loudspeaker is disposed, and further includes a sound wave directivity adjustment device as described in any one of the above claims, wherein the sound wave directivity adjustment device has an inlet port connected to the sound outlet port of the speaker body.

[0020] Compared to existing technologies, the speaker and its sound wave directivity adjustment device provided by this invention allow the sound from the speaker to enter the housing and then be directed through the waveguide of the horn body to limit the directionality of the sound wave. The vertical directivity of the sound wave can be changed by adjusting the connection positions of different waveguides in the horn body to the speaker's outlet according to the needs of the environment and sound effects. Moreover, by adjusting the vertical directivity of each speaker, the "blank area" between speakers can be covered, maintaining frequency response consistency within the coverage area, making the sound wave distribution more uniform and the sound softer. Attached Figure Description

[0021] Figure 1 This is a first-view structural schematic diagram of the sound wave directivity adjustment device for a speaker provided by the present invention.

[0022] Figure 2 This is a second-view structural schematic diagram of the sound wave directivity adjustment device for a speaker provided by the present invention.

[0023] Figure 3 A schematic diagram of the horn body of the sound wave directivity adjustment device for a speaker provided by the present invention.

[0024] Figure 4 A cross-sectional structural schematic diagram of the sound wave directivity adjustment device for a speaker provided by the present invention.

[0025] Figure 5 A cross-sectional side view of the horn body of the sound wave directivity adjustment device for a speaker provided by the present invention.

[0026] Figure 6 This is a perspective structural diagram of the horn body of the sound wave directivity adjustment device for a speaker provided by the present invention.

[0027] Figure 7 This is an exploded structural diagram of the sound wave directivity adjustment device for a speaker provided by the present invention.

[0028] Figure 8 This is a schematic diagram of the housing of the speaker's sound wave directivity adjustment device provided by the present invention.

[0029] Figure 9 A schematic diagram of the structure of the speaker's sound wave directivity adjustment device provided by the present invention, with the lever in the first position.

[0030] Figure 10 A schematic diagram of the structure of the speaker's sound wave directivity adjustment device provided by the present invention, showing the lever in the second position.

[0031] Figure 11 A schematic diagram of the structure of the speaker's sound wave directivity adjustment device provided by the present invention, with the lever in the third position.

[0032] Figure 12 This is a schematic diagram of the speaker provided by the present invention.

[0033] Attached image annotations:

[0034] Sound wave directivity adjustment device 100, housing 1, sound inlet 11, slide 12, positioning pin 13, second magnetic component 15, horn body 2, waveguide 21, horn housing 22, first partition 23, second partition 24, lever 25, positioning hole 251, limiting hole 252, first magnetic component 253, positioning slider 26, limiting groove 27, waveguide panel 3, bracket 4, speaker body 200 Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] It should be noted that when a component is referred to as being "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0037] It should also be noted that the directional terms such as left, right, up, and down in the embodiments of the present invention are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.

[0038] Please see Figure 1 , Figure 2 and Figure 3The speaker directivity adjustment device 100 provided by the present invention includes a housing 1 connected to the sound outlet of the speaker. The housing 1 has a sound inlet hole 11 on the sound inlet side. A horn body 2 is provided in the housing 1. The horn body 2 includes a plurality of directional waveguides 21. The horn body 2 is movably disposed in the housing 1. Adjusting the position of the horn body 2 in the housing 1 causes the corresponding waveguides 21 to output sound waves, thereby adjusting the vertical directivity of the sound waves. In use, the sound from the speaker enters the housing 1 and passes through the waveguide 21 of the horn body 2, which can limit the directivity of the sound wave. The position of the connection between the different waveguides 21 in the horn body 2 and the speaker outlet can be adjusted according to the needs of the environment and sound effects to change the vertical directivity of the sound wave, that is, to adjust the angle of the sound wave in the vertical direction. This avoids the sound being too harsh when the audience is close to the line array. Moreover, by adjusting the vertical directivity of each speaker, the "blank area" between speakers can be covered, maintaining the frequency response consistency within the coverage area. It can also increase the vertical coverage area, making the sound wave distribution more uniform and the sound softer.

[0039] In addition, in this embodiment, the horn body 2 changes the vertical directivity of the sound wave by adjusting its position, which is a physical adjustment rather than forcibly distorting the direction of the sound through electronic circuit algorithms or other principles. This results in a purer sound with higher fidelity.

[0040] The horn body 2 includes a horn shell 22, several longitudinally arranged first partitions 23, and several transversely arranged second partitions 24. The first partitions 23 and second partitions 24 intersect to form several directional waveguides 21. The horn shell 22 and the first partitions 23 are bent to one side, and the curvature of the horn shell 22 and each first partition 23 is different (e.g., ...). Figure 6 As shown), waveguides 21 with different curvatures are formed, so that when sound waves enter the waveguides 21, they form different angles due to their different curvatures. Furthermore, the sound-emitting side and the sound-incoming side of the horn body 2 are set in a conical shape (i.e., the sound-emitting side is wider and the sound-incoming side is narrower), so that the sound waves have diffusion properties to increase the sound wave radiation surface.

[0041] The first partition 23 divides the horn shell 22 into at least three groups of directional waveguides 21, such that the three or more groups of waveguides 21 have different directions, for example, the directions of the three groups of waveguides 21 are 0 degrees, 15 degrees, 30 degrees, etc., which can be set according to needs. In this embodiment, there are five first partitions 23, dividing the horn shell 22 into six groups of waveguides 21, with each pair of waveguides 21 forming a sound transmission channel. Of course, the grouping of waveguides 21 is not limited to two groups forming a sound transmission channel; it can also be one or more groups forming a sound transmission channel, which can be determined as needed and is not limited here.

[0042] like Figure 2 As shown, the diameter of the sound inlet 11 is equal to the width of the two sets of waveguides 21, so that when the sound waves of the loudspeaker pass through the sound inlet 11, they can only enter the horn body 2 through the two sets of waveguides 21. That is, it satisfies the structure that the two sets of waveguides 21 form a sound-emitting channel, which can avoid sound wave diffusion. Of course, when three sets of waveguides 21 are used as a sound-emitting channel, the diameter of the sound inlet 11 is equal to the width of the three sets of waveguides 21, and so on.

[0043] Please refer to the following: Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 Each of the second partitions 24 is arranged with one long and one short interval. The long second partition 24 serves to divert the sound waves, and the short second partition 24 diverts the sound waves between the long second partitions 24. This avoids too many long partitions blocking the sound inlet 11, which would prevent the sound waves from completely entering the horn body 2 and cause the sound waves to disperse.

[0044] The horn body 2 further includes at least one lever 25 and at least one positioning slider 26. The lever 25 is connected to the horn housing 22, and the positioning slider 26 is disposed on the horn housing 22. The housing 1 has at least one sliding groove 12, and the positioning slider 26 is disposed in the sliding groove 12. When adjusting the position of the horn body 2, the lever 25 can be moved to adjust the horn body 2 to the desired position. The positioning slider 26, in cooperation with the sliding groove 12, also limits the range of movement of the lever 25.

[0045] Specifically, a positioning hole 251 is provided in the middle of the lever 25. During installation, the positioning slider 26 extends out of the positioning hole 251 and is placed in the slide groove 12, so that the lever 25 is connected to the horn shell 22, and the movement of the horn shell 2 can be controlled by the lever 25. Further, a positioning pin 13 is provided on the inner top surface of the horn shell 22 at the sound inlet 11. One end of the lever 25 has a limiting hole 252, and the top surface of the horn shell 22 has a limiting groove 27. The positioning pin 13 passes through the limiting hole 252 and is placed in the limiting groove 27, which serves to limit the movement of the horn shell 22.

[0046] Furthermore, the slide groove 12 and the limiting groove 27 are both arranged in a straight line, so that when the lever 25 is turned, the horn body 2 can only move along a straight line. This allows the horn body 2 to satisfy the position adjustment of a sound channel, ensuring that the sound inlet side of the current sound channel is located at the sound inlet hole 11, guaranteeing that sound waves can enter the current sound channel. In this example, there are two levers 25, located on the top and bottom surfaces of the horn body 2. Adjusting the position of the horn body 2 using the two levers 25 can prevent the horn body 2 from tilting. Correspondingly, the positioning slider 26, the slide groove 12, the positioning pin 13, and the limiting groove 27 are all arranged opposite each other.

[0047] The lever 25 is also equipped with a first magnetic element 253, and the housing 1 is equipped with a second magnetic element 15 that attracts the first magnetic element 253. When the position of the horn body 2 is adjusted by the lever 25, the attraction between the first magnetic element 253 and the second magnetic element 15 positions the horn body 2, preventing displacement of the horn body 2 due to sound wave vibration. Specifically, the number of the first magnetic element 253 and the second magnetic element 15 can be determined according to the number of sound channels, so that the first magnetic element 253 and the second magnetic element 15 can be attracted each time a sound channel is adjusted, thereby achieving the positioning of the horn body 2.

[0048] Preferably, two rotatable waveguide panels 3 are provided at the opening of the housing 1. The waveguide panels 3 are located at the sound outlet of the horn body 2, and the angle between the two waveguide panels 3 can be adjusted to adjust the horizontal directivity of the sound wave. When it is necessary to transmit the sound wave to a distant place, the angle between the two waveguide panels 3 can be reduced. Conversely, when the angle between the waveguide panels 3 is increased, the sound wave is transmitted to a shorter distance and the width is wider.

[0049] This embodiment adjusts the vertical directivity of the sound waves from the horn body 2 and the horizontal directivity of the waveguide panel 3 to increase the coverage of the sound waves. In cases where indoor space ceiling height or outdoor hanging height is limited and more line array speakers cannot be added, the sound wave directivity adjustment device 100 can expand the maximum coverage of the speaker group without replacing the waveguide, and also make the sound waves more evenly distributed and the sound softer.

[0050] Specifically, the waveguide panel 3 is connected to the housing 1 via two brackets 4 (e.g., Figure 1 and Figure 7 As shown, waveguide panel 3 is hinged to housing 1, allowing the included angle between the two waveguide panels 3 to be freely adjusted. The distance between the two supports 4 is the width of the two sets of waveguides 21, which is the width of a sound transmission channel. This allows the horizontal directivity of the sound waves propagating through the sound transmission channel to be controlled by the two waveguide panels 3. Here, the width of the two supports 4 is set according to the width of the sound transmission channel and is not limited to the width of the two sets of waveguides 21.

[0051] When in use, the sound wave directivity adjustment device 100 can adjust the vertical directivity of the sound wave by adjusting the position of the horn body 2 according to the on-site environment and sound effect requirements (e.g., Figure 9 , Figure 10 and Figure 11 As shown in the figure, the horizontal directionality of the sound waves propagating from the horn body is adjusted by the angle between the two waveguide panels 3, making the sound waves more uniform and the sound effect better.

[0052] Based on the aforementioned speaker's sound wave directivity adjustment device, the present invention also provides a corresponding speaker (such as...). Figure 12 As shown, the device includes a speaker body 200 and a sound wave directivity adjustment device 100. A loudspeaker is mounted on the speaker body 200, and the sound inlet 11 of the sound wave directivity adjustment device 100 is connected to the sound outlet 100 of the speaker body 200. Since the sound wave directivity adjustment device 100 has been described in detail above, it will not be repeated here.

[0053] In summary, the speaker and its sound wave directivity adjustment device provided by the present invention, wherein the sound wave directivity adjustment device, when in use, allows the sound from the speaker to enter the housing, and then, through the waveguide of the horn body, the directivity of the sound wave can be defined. Furthermore, the connection positions of different waveguides in the horn body to the speaker's outlet can be adjusted according to the environment and sound effect requirements to change the vertical directivity of the sound wave, i.e., adjust the vertical angle of the sound wave. This prevents the sound from being too harsh when the audience is close to the line array. Moreover, by adjusting the vertical directivity of each speaker, the "blank area" between speakers can be covered, maintaining frequency response consistency within the coverage area, increasing the vertical coverage range, making the sound wave distribution more uniform, and the sound softer.

[0054] Furthermore, in this embodiment, the adjustment of the horn body's position is a physical adjustment, rather than forcibly distorting the direction of the sound through electronic circuit algorithms or other principles. This results in a purer sound with higher fidelity.

[0055] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solution and inventive concept of the present invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A sound wave directivity adjustment device for a speaker, characterized in that, The device includes a housing connected to the speaker outlet of a speaker enclosure. The housing has a sound inlet hole on its sound inlet side. A horn body is disposed in the housing. The horn body includes several directional waveguides. The horn body is movably disposed in the housing. Adjusting the position of the horn body in the housing causes the corresponding waveguides to output sound waves, thereby adjusting the vertical directivity of the sound waves. The horn body includes a horn shell, several longitudinally arranged first partitions and several transversely arranged second partitions. The first partitions and second partitions intersect to form several directional waveguides. The horn shell and the first partitions are bent to one side, and the curvature of the horn shell and each first partition is different, forming waveguides with different curvatures. The horn body also includes at least one lever and at least one positioning slider. The lever is connected to the horn housing, and the positioning slider is disposed on the horn housing. The housing has at least one groove, and the positioning slider is disposed in the groove.

2. The sound wave directivity adjustment device for a speaker according to claim 1, characterized in that, The first partition divides the horn housing into at least three sets of directional waveguides.

3. The sound wave directivity adjustment device for a speaker according to claim 1, characterized in that, The lever is also provided with a first magnetic element, and the housing is provided with a second magnetic element that is attracted to the first magnetic element.

4. The sound wave directivity adjustment device for a speaker according to claim 1, characterized in that, The diameter of the sound inlet is equal to the width of the two sets of waveguides.

5. The sound wave directivity adjustment device for a speaker according to claim 1, characterized in that, Two rotatable waveguide panels are provided at the opening of the housing. The waveguide panels are located at the sound outlet of the horn body, and the angle between the two waveguide panels can be adjusted to regulate the horizontal directivity of the sound waves.

6. The sound wave directivity adjustment device for a speaker according to claim 1, characterized in that, Each second partition is set with one long and one short interval.

7. A speaker, comprising a speaker body, wherein a loudspeaker is disposed on the speaker body, characterized in that, It also includes the sound wave directivity adjustment device as described in any one of claims 1-6, wherein the sound wave directivity adjustment device has an inlet port connected to the sound outlet port of the speaker body.

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